Malicious PDF — malware analysis report

Static analysis result for SHA-256 24aeb135f6c56c2f…

MALICIOUS

PDF

38.2 KB Created: 2020-08-14 20:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b1a84d54979b0c2dd007ef5a1fbb12b SHA-1: 22db1690c69d594fea6b3cbcf2e675de8804361d SHA-256: 24aeb135f6c56c2fef48229e2cec0e9589939c4b4b1b04d4733affd415ea3882
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised with keywords related to 'online action movies 2018'. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The primary malicious intent appears to be directing users to the ttraff.ru URL, likely for further exploitation or phishing.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=online+action+movies+2018
    • http://files.access2college.com/uploads/1/3/0/7/130739227/fogogiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/94362697272.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/9103767261.pdf
    • https://cdn.shopify.com/s/files/1/0432/9052/5849/files/67745977569.pdf
    • https://cdn.shopify.com/s/files/1/0432/1945/2063/files/feluxuzapuwosul.pdf
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/ridawokejupaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/4085/0598/files/49504140401.pdf
    • https://cdn.shopify.com/s/files/1/0437/3794/0122/files/calendrio_2020_com_feriados_rio_de_janeiro.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/tegofoxejolodoliloteduv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7265/files/98554145875.pdf
    • https://cdn.shopify.com/s/files/1/0433/4632/9750/files/93183091741.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000551c.bin
be47da4eaa8d21388ffccd2a8955f94b7006b61dadc66a773276cc1412de1aab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x551C 5456 bytes
font_01_sfnt_off000067a3.bin
55f630c983a513736c69e17bd6107adc940c43640b8841c391efc087775881e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A3 11020 bytes

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